Research on the porous Ca/P bioactive ceramic coating prepared by laser cladding: The effect of polymethyl methacrylate pore-forming agent addition amount on coating formation

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-02-18 DOI:10.1016/j.surfcoat.2025.131913

Defu Liu , Linhu Zhang , Zixin Deng , Siwei Xin , Yigui Su , Tao Chen

{"title":"Research on the porous Ca/P bioactive ceramic coating prepared by laser cladding: The effect of polymethyl methacrylate pore-forming agent addition amount on coating formation","authors":"Defu Liu , Linhu Zhang , Zixin Deng , Siwei Xin , Yigui Su , Tao Chen","doi":"10.1016/j.surfcoat.2025.131913","DOIUrl":null,"url":null,"abstract":"<div><div>Porous bioactive ceramic coatings play a significant role in promoting rapid osseointegration between titanium alloy artificial joint stems and host bone. However, fabricating such coatings remains challenging. In this work, the porous bioactive ceramic coating with a three-layered structure was prepared on medical-grade pure titanium via laser cladding. The coating structure consisted of a porous bioactive layer, a transition layer, and a Ti-locking layer in a top-to-bottom sequence. Hydroxyapatite (HA) served as the primary material for preparing the porous bioactive layer, while polymethyl methacrylate (PMMA) was incorporated as a pore-forming agent to create an interconnected porous structure within the coating. The study thoroughly investigated the effect of PMMA addition amount on the phase composition and bioactive substance content, as well as the internal pore diameter, morphology, and porosity within the bioactive layer. The formation mechanisms of the porous structure within the porous bioactive layer were further elucidated. The results showed that when PMMA addition amount was 15 wt%, the porous bioactive layer had a uniform distribution of micropores, forming a well-interconnected porous structure, and the coating formation quality was excellent. This research has important implications for achieving rapid osseointegration between artificial joint stems and host bones.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"501 ","pages":"Article 131913"},"PeriodicalIF":5.3000,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897225001872","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}

引用次数: 0

Abstract

Porous bioactive ceramic coatings play a significant role in promoting rapid osseointegration between titanium alloy artificial joint stems and host bone. However, fabricating such coatings remains challenging. In this work, the porous bioactive ceramic coating with a three-layered structure was prepared on medical-grade pure titanium via laser cladding. The coating structure consisted of a porous bioactive layer, a transition layer, and a Ti-locking layer in a top-to-bottom sequence. Hydroxyapatite (HA) served as the primary material for preparing the porous bioactive layer, while polymethyl methacrylate (PMMA) was incorporated as a pore-forming agent to create an interconnected porous structure within the coating. The study thoroughly investigated the effect of PMMA addition amount on the phase composition and bioactive substance content, as well as the internal pore diameter, morphology, and porosity within the bioactive layer. The formation mechanisms of the porous structure within the porous bioactive layer were further elucidated. The results showed that when PMMA addition amount was 15 wt%, the porous bioactive layer had a uniform distribution of micropores, forming a well-interconnected porous structure, and the coating formation quality was excellent. This research has important implications for achieving rapid osseointegration between artificial joint stems and host bones.

查看原文本刊更多论文

多孔生物活性陶瓷涂层在促进钛合金人工关节柄与宿主骨快速骨结合方面发挥着重要作用。然而，制作这种涂层仍然具有挑战性。在这项工作中，通过激光熔覆技术在医用级纯钛上制备了具有三层结构的多孔生物活性陶瓷涂层。涂层结构由多孔生物活性层、过渡层和钛锁层按从上到下的顺序组成。羟基磷灰石（HA）是制备多孔生物活性层的主要材料，而聚甲基丙烯酸甲酯（PMMA）则是在涂层内形成相互连接的多孔结构的成孔剂。研究深入探讨了 PMMA 添加量对相组成和生物活性物质含量的影响，以及对生物活性层内部孔径、形态和孔隙率的影响。研究还进一步阐明了多孔生物活性层内多孔结构的形成机制。结果表明，当 PMMA 添加量为 15 wt% 时，多孔生物活性层的微孔分布均匀，形成了良好的互联多孔结构，涂层形成质量优异。这项研究对实现人工关节柄与宿主骨的快速骨结合具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.