Journal of Material Processing and Characterization最新文献

Development and Characterization of Three-Dimensional Lattice Hydroxyapatite Scaffolds Using Aqueous Based Extrusion Fabrication (ABEF) for Biomedical Applications 用于生物医学应用的三维点阵羟基磷灰石支架的开发和表征

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.68283

M. K. Herliansyah, Y. Nugroho

{"title":"Development and Characterization of Three-Dimensional Lattice Hydroxyapatite Scaffolds Using Aqueous Based Extrusion Fabrication (ABEF) for Biomedical Applications","authors":"M. K. Herliansyah, Y. Nugroho","doi":"10.22146/JMPC.V1I2.68283","DOIUrl":"https://doi.org/10.22146/JMPC.V1I2.68283","url":null,"abstract":"A solid freeform fabrication technique, aqueous based extrusion fabrication (ABEF), was investigated for the creation of three-dimensional lattice Hydroxyapatite scaffolds with pre-designed pore properties. An aqueous based Hydroxyapatite paste was extruded through a 0.8 mm nozzle, and deposited layer-by-layer at room temperature according to a computer-aided design (CAD) file. The morphology of green body and sintered body were characterized using digital microscope. The phase purity was analyzed using XRD. Fourier transform infrared spectroscopy (FTIR) was performed in order to understand the phase changes upon heating process and to determine HA stoichiometry. The current investigation confirms the possibility of producing three-dimensional lattice Hydroxyapatite scaffolds without any impurities as indicated by XRD and FTIR techniques. The morphology analysis of the structured macroporous Hydroxyapatite bioceramic shows interconnected macro pores and micro pores. It will give possibility for colonization of osteoblast in the pores, fibrovascular ingrowth and finally the deposition of new bone formation.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"68 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131891324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chitosan-Curcumin Coating Characterization on Cobalt-Chrome Surface by 100 kHz Ultrasonic Spray Method 100 kHz超声喷涂法表征钴铬表面壳聚糖-姜黄素涂层

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.68281

Katiko Imamul Muttaqin

引用次数: 0

The Effect of Varying Water to Powder Ratios on the Microhardness and Microstructure of Mineral Trioxide Aggregate 不同水粉比对矿物三氧化物骨料显微硬度和微观结构的影响

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.68279

Rethy Den, R. Dharmastiti, N. Nuryono, Leny Yuliatun, Widjijono Widjijono

{"title":"The Effect of Varying Water to Powder Ratios on the Microhardness and Microstructure of Mineral Trioxide Aggregate","authors":"Rethy Den, R. Dharmastiti, N. Nuryono, Leny Yuliatun, Widjijono Widjijono","doi":"10.22146/JMPC.V1I2.68279","DOIUrl":"https://doi.org/10.22146/JMPC.V1I2.68279","url":null,"abstract":"The composition of water and powder in a mixture is one of the common problems in application as clinicians typically estimate the ratio chairside. The purpose of this study was to investigate the effect of varying water-to-powder ratios on the microhardness and microstructure of mineral trioxide aggregate (MTA). ROOTDENT MTA was investigated. One gram of cement was mixed with 0.28, 0.33, and 0.40 grams of distilled water and was stored for 1, 7, and 28 days in the water. Samples were subjected to x-ray diffraction (XRD), scanning electron microscopy (SEM), and microhardness tests. Tricalcium silicate, dicalcium silicate, zirconium dioxide, calcium carbonate, and calcium hydroxide were detected by XRD. SEM showed the presence of amorphous, porous capillary channel and capillary structure on the surface of the specimens. The SEM image for each water-to-powder ratio of the surface of the material was indistinguishable from the other. The highest microhardness was exhibited by the MTA specimen with the 0.33 water-to-powder ratio submerged in the water for 28 days.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126819719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Clay Addition on the Mechanical Strength of Unsaturated Polyester Hybrid Composite Reinforced with Woven Agel Leaf Fiber/Glass Fiber 粘土掺量对编织天使叶纤维/玻璃纤维增强不饱和聚酯杂化复合材料力学强度的影响

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.68280

Orisanto Darma Setiawan, K. Kusmono, J. Jamasri

{"title":"The Effect of Clay Addition on the Mechanical Strength of Unsaturated Polyester Hybrid Composite Reinforced with Woven Agel Leaf Fiber/Glass Fiber","authors":"Orisanto Darma Setiawan, K. Kusmono, J. Jamasri","doi":"10.22146/JMPC.V1I2.68280","DOIUrl":"https://doi.org/10.22146/JMPC.V1I2.68280","url":null,"abstract":"In the field of material technology, natural fiber materials are candidates for reinforcement in the production of lightweight, high-strength, environment-friendly, economical composites. Hybrid composites are comprised of a variety of reinforcement, fillers, and polymers. The objective of this research was to figure out the effect of clay addition on the mechanical properties of hybrid composites reinforced with woven agel leaf fiber/glass fiber. The materials used included woven agel leaf fiber, glass fiber, clay, Yukalac BQTN 157 type unsaturated polyester resin, and methyl-ethyl ketone peroxide catalyst. Firstly, the woven agel leaf fiber was given an alkaline treatment by submersion in a 4% NaOH solution for 1 hour, then rinsed with clean water and dried in the open air for 48 hours. The composite manufacture process employed 3 sheets of woven agel leaf fiber and 4 sheets of glass fiber sized 25 cm × 20 cm with unsaturated polyester matrix. The manufacture method used was the vacuum bagging method with a suction pressure of –70 cmHg. The mechanical tests carried out consisted of tensile test (based on the ASTM D638 standard), bending test (based on the ASTM D790 standard), and impact test (based on the ASTM D5942 standard). The results show that an addition of 1 wt% clay was able to increase the tensile strength, bending strength, and impact strength of the hybrid composite reinforced with woven agel leaf fiber/glass fiber by 7.26%, 30.85%, and 36.25%, respectively.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127754573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Improvement of Wear and Impact Resistance of High Chromium White Cast Iron for Crusher 破碎机用高铬白口铸铁耐磨抗冲击性能的提高

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.68282

Ridho Sabdo Prayogo, L. Setyana

{"title":"The Improvement of Wear and Impact Resistance of High Chromium White Cast Iron for Crusher","authors":"Ridho Sabdo Prayogo, L. Setyana","doi":"10.22146/JMPC.V1I2.68282","DOIUrl":"https://doi.org/10.22146/JMPC.V1I2.68282","url":null,"abstract":"Crusher is a component of heavy equipment used to break rocks or solid materials into a needed size. Crusher that is made of high chromium white cast iron will endure friction and impact forces. The quality improvement of the crusher is needed for enduring its service life. This research is conducted to determine the influence of heat treatment on the wear and impact resistance of the crusher. The material used in this research was high chromium white cast iron with some main compositions such as 18.5%wt Cr, 2.1%wt C, and 2.8%wt Ni. The heat treatment carried out was austenitization at a temperature of 1000ºC, followed by the quenching, quenching-tempering, normalizing, and annealing process. The tests carried out for the characterization of mechanical properties were Vickers hardness, impact, and wear rate. Meanwhile, observation was conducted to examine the microstructure of the specimen. Based on the observations, the microstructure of the specimen is dominated by M7C3 eutectic carbide, retained austenite and martensite. The highest hardness of the high chromium white cast iron (788 VHN) is a specimen with austenitizing-quenching (up 16% compared to normalizing specimens) and gradually decreases (up to 12%) after the 450ºC tempering. The highest wear resistance (8.1E-6 mm³/kg.m) is the specimen with tempering at 450ºC. The highest impact strength (0.055 J/mm²) occurs in the normalizing process. Hence, the heat treatment that can produce optimal properties to be applied in the crusher is tempering with the temperature of 450ºC.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127407448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of Tempering Temperature on Physical and Mechanical Properties of Martensitic Stainless Steel Repaired with Gtaw 回火温度对Gtaw修复马氏体不锈钢物理力学性能的影响

Journal of Material Processing and Characterization Pub Date : 2021-08-07 DOI: 10.22146/JMPC.V1I2.53220

Gangsar Pinilih, K. Kusmono

{"title":"Effect of Tempering Temperature on Physical and Mechanical Properties of Martensitic Stainless Steel Repaired with Gtaw","authors":"Gangsar Pinilih, K. Kusmono","doi":"10.22146/JMPC.V1I2.53220","DOIUrl":"https://doi.org/10.22146/JMPC.V1I2.53220","url":null,"abstract":"One of the driving equipment to produce electricity that is widely used is gas turbines. To guarantee gas turbine can be operated according to its design and capacity, it is necessary to choose a material that is suitable for its operating conditions and working temperature. Commonly gas turbine compressor blade material is a martensitic stainless steel which has a high enough strength at the compressor working temperature. Damage that is often experienced occurs at the compressor blade and turbine blade. Gas tungsten arc welding (GTAW) build-up repair is one of the methods used to repair blades. This research was conducted to analyze the effect of tempering temperatures on martensitic stainless steel repaired with GTAW. Research was focus on mechanical properties and microstructure after repaired with GTAW and had heat treatment with various tempering temperatures. In the microstructure, all weld area of the specimens that were tempered at temperatures of 200, 500 and 600°C showed the same microstructure characteristics which consisted of a matrix of tempered martensite as well as chromium carbide. The size of tempered martensite at temperatures of 600°C is larger than 500 and 200°C. The strength and hardness of the material with a tempering temperature of 200°C is higher in value compared to tempering temperatures of 500°C and 600°C, while the toughness of the material with tempering temperature of 500°C is higher compared to 200°C and 600°C. ","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"63 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128454169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The effect of AA5083H116 2-layer MIG welding speed on physical and mechanical properties AA5083H116 2层MIG焊接速度对其物理力学性能的影响

Journal of Material Processing and Characterization Pub Date : 2020-01-23 DOI: 10.22146/JMPC.V1I1.51417

M. Mudjijana

引用次数: 1

The Effects of Withdrawal Stop Duration in the Directional Solidification of Al-7 wt% Si Alloy on Solidification Parameters, Microstructure, and Microhardness al - 7wt % Si合金定向凝固中止回时间对凝固参数、组织和显微硬度的影响

Journal of Material Processing and Characterization Pub Date : 2020-01-23 DOI: 10.22146/jmpc.52249

Seab Piseth, D. Masnur

{"title":"The Effects of Withdrawal Stop Duration in the Directional Solidification of Al-7 wt% Si Alloy on Solidification Parameters, Microstructure, and Microhardness","authors":"Seab Piseth, D. Masnur","doi":"10.22146/jmpc.52249","DOIUrl":"https://doi.org/10.22146/jmpc.52249","url":null,"abstract":"The effects of withdrawal stop duration in the directional solidification of Al-7 wt% Si alloy on solidification parameters, microstructure, and microhardness were investigated. Directional solidification experiments were carried out in five stopping durations: 0 s, 20 s, 30 s, 40 s, and 50 s. Some solidification parameters such as growth rate and temperature gradient were calculated in the stopping region 15 mm from the bottom of the sample. Microstructure parameters such as primary and secondary dendrite arm spacings were defined on both longitudinal and transverse sections in the stopping region, whereas microhardness properties were tested on the longitudinal section in this region. With the rise in the withdrawal stop duration from 0 s to 50 s, the growth rate decreased slightly from 1.26 to 0.84 mm/s, while the temperature gradient remained at 1.71 ˚C/mm. Furthermore, the microstructure of α-Al dendrites became coarser, and their shapes changed from thin to irregular plates. Primary and secondary dendrite arm spacings increased from 106.4 to 205.7 µm and 19.4 to 38.1 µm, respectively, when the stopping duration was increased. In addition, the hardness decreased from 54.0 to 49.9 HV.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132454471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compressive Strength and Thermal Conductivity of Porous Mullite Ceramics 多孔莫来石陶瓷的抗压强度和导热性

Journal of Material Processing and Characterization Pub Date : 2020-01-23 DOI: 10.22146/JMPC.V1I1.51410

M. W. Wildan, F. Marpaung

{"title":"Compressive Strength and Thermal Conductivity of Porous Mullite Ceramics","authors":"M. W. Wildan, F. Marpaung","doi":"10.22146/JMPC.V1I1.51410","DOIUrl":"https://doi.org/10.22146/JMPC.V1I1.51410","url":null,"abstract":"Porous ceramics are a form of ceramic material with widespread applications, such as filters, isolators, and acoustics. This research aimed to investigate the compressive strength and thermal conductivity of porous mullite ceramics (3Al2O3.2SiO2 or Si2Al6O13) produced using dry yeast powder as a PFA (pore-forming agent). Kaolin powder (Al2O3.2SiO4.2H2O or Al2Si2O5(OH)4) was used as a raw material for producing mullite ceramics. Kaolin powder and dry yeast powder were mixed at a variety of dry yeast powder weight fractions: 0%, 5%, 10%, 15%, 20%, and 25%. The composition was mixed using Turbula Mixer for 1 hour. The cylindrical green body (diameters of 12 mm, 15 mm, and 30 mm) of every constituent was formed by the uniaxial pressing method at 10 MPa. Monolithic kaolin was sintered at variable temperatures (1,100 oC, 1,200 oC, 1,300 oC, 1,400 oC, 1,450 oC) for 2 hours then subjected to several tests for its density. From the bulk density tests, it was found that the optimum temperature for 2-hour sintering was 1,450 oC. This temperature was then used for the sintering process of the kaolin specimens which contained dry yeast powder. Testing was performed on the microstructure, bulk density, burning waste in mass and volume, compressive strength, and thermal conductivity. According to the literature, kaolin will transform into mullite (3Al2O3.2SiO2 or Si2Al6O13) and cristobalite (SiO2) at 1,450 oC. It was found that with the increase in the content of dry yeast powder as PFA in the mixture with kaolin, the bulk density decreased (from 2.44 gr/cm3 to 1.521 gr/cm3), the porosity increased (from 23.77% to 52.48%), the compressive strength decreased (from 38.04 MPa to 4.51 MPa), and the thermal conductivity decreased (from 3.76 W/moC to1.34 W/moC), each from yeast powder content 0% to 25%.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126913505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Preliminary Study of Extraction and Characterization of Nanocrystalline Cellulose (NCC) from Ramie Fiber 苎麻纤维中纳米晶纤维素(NCC)的提取及表征初探

Journal of Material Processing and Characterization Pub Date : 2020-01-23 DOI: 10.22146/JMPC.V1I1.51418

K. Kusmono

{"title":"A Preliminary Study of Extraction and Characterization of Nanocrystalline Cellulose (NCC) from Ramie Fiber","authors":"K. Kusmono","doi":"10.22146/JMPC.V1I1.51418","DOIUrl":"https://doi.org/10.22146/JMPC.V1I1.51418","url":null,"abstract":"Nanocrystalline cellulose (NCC) is today’s one of rapidly growing nanocomposite reinforcing materials. This is thanks to some advantages that come with it over anorganic nanocomposite reinforcing materials, for example, nanoclay, nanosilica, nanoalumina, carbon nanotubes, among others. Some of the advantages of NCC are environment-friendliness due to being organic-compound-based, high mechanical property, and easy manufacturing. NCC can be extracted from natural cellulose sources, such as natural fiber, wood, and animals. One of the natural fibers rich in cellulose content, in this case around 80%, is fiber of ramie which is ubiquitous in Indonesia. It is well known that the acid hydrolysis method is an easy route to NCC fabrication. A number of chemical treatments like de-waxing, bleaching, and alkaline treatment are typically performed prior to acid hydrolysis process. The effect of such chemical treatments as precursors of alkaline hydrolysis on ramie fiber characteristics was investigated in this research. Firstly, ramie fiber was cut 1 cm in size, then grinded and sieved. The fiber was then subjected to de-waxing process by adding it into a toluene-ethanol solution (1:2). Then, it was submitted to bleaching with 0.7% sodium chlorite (NaClO2) solution at 75 °C for 1 hour. Lastly, the fiber was subjected to an alkaline treatment in 2% NaOH solution for 2 hours. Characterization with FT-IR, XRD, and TGA of the fiber which had underwent a number of surface treatments was conducted. Results show that the chemical treatments had successfully removed amorphous components like lignin and hemicellulose from the ramie fiber. Chemical treatments were proven able to increase the crystallinity index and thermal stability of ramie fiber.","PeriodicalId":366558,"journal":{"name":"Journal of Material Processing and Characterization","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132012366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6