Optimization of Powder Metallurgical Parameters for Improving Corrosion Rate of Biodegradable Zinc-Hydroxyapatite Composite

IF 1.6 4区材料科学 Q2 Materials Science

Transactions of The Indian Institute of Metals Pub Date : 2024-07-28 DOI:10.1007/s12666-024-03357-1

Dayanidhi Krishana Pathak, Pawan Sharma, Pulak Mohan Pandey

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Abstract

The study investigates the impact of powder metallurgical factors on the corrosion rate (CR) of biodegradable zinc (Zn)-hydroxyapatite (HAP) materials. Factors such as HAP weight percentage (wt%), compaction pressure (CP), heating rate (HR), sintering temperature (ST), and dwell time (DT) were examined. Static immersion test was performed to determine the CR of the samples. The results showed an increase in CR with increased HAP wt%, while factors like CP, HR, and ST led to lower CR. The CR decreased with an increase in DT upto 18 min and thereafter increased. HAP wt% was found to be the most significant factor, contributing 57.95% on CR. A genetic algorithm-based optimization was conducted to minimize CR of Zn-HAP materials. The experimental CR value obtained at optimized levels, i.e., 3 wt% HAP, 34 MPa CP, 25 °C/min HR, 480 °C ST, and 30 min DT, were found to be 0.121 mm/yr, which was within the range of the predicted value 0.08 ± 0.044 mm/yr. This work presents a statistical modeling approach for predicting the CR of Zn-HAP composite for biomedical applications.

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优化粉末冶金参数以提高可生物降解的羟基磷灰石锌复合材料的腐蚀率

本研究探讨了粉末冶金因素对可生物降解锌（Zn）-羟基磷灰石（HAP）材料腐蚀速率（CR）的影响。研究考察了 HAP 重量百分比 (wt%)、压实压力 (CP)、加热速率 (HR)、烧结温度 (ST) 和停留时间 (DT) 等因素。通过静态浸泡试验确定了样品的 CR。结果表明，随着 HAP wt% 的增加，CR 也随之增加，而 CP、HR 和 ST 等因素则会导致较低的 CR。在 18 分钟内，CR 随 DT 的增加而降低，之后又有所增加。HAP wt% 是对 CR 影响最大的因素，占 57.95%。为了使 Zn-HAP 材料的 CR 最小化，进行了基于遗传算法的优化。在优化水平（即 3 wt% HAP、34 MPa CP、25 °C/min HR、480 °C ST 和 30 min DT）下获得的实验 CR 值为 0.121 mm/yr，在预测值 0.08 ± 0.044 mm/yr 的范围内。本研究提出了一种统计建模方法，用于预测生物医学应用中 Zn-HAP 复合材料的 CR。

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来源期刊

Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys

CiteScore

2.60

自引率

6.20%

发文量

期刊介绍： Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.