High-Functionally Graded Materials by Plasma Process

在1999-2001财政年度期间，促进了题为“等离子体工艺高功能分级材料”的联合研究，以形成高功能分级材料并通过高能加工提高这些材料的性能。日本和美国的主要研究人员相互访问，并在实验和理论研究方面进行了合作。在这三年中，本项目的研究成果如下：1。大阪大学利用气洞式等离子喷涂技术制备了功能梯度氧化锆涂层、氧化锆/氧化铝复合涂层和WC复合涂层。研究了涂层的显微组织和性能，并阐明了其密度、硬度等的梯度功能。所得HFGM的微观结构和功能表征。其中一个例子是氧化锆、氧化铝复合涂层。并对实验结果进行了比较和讨论。此外，还将促进高能等离子体等增强所得HFGM的功能。促进了FGM等离子喷涂新工艺的研究，采用气体隧道式等离子反应喷涂技术制备了TiN厚涂层。澄清了涂层的显微组织和硬度、TiN比等物理性能。该方法是生产hfgm的新工艺。日方访问加州大学洛杉矶分校，推动了双方关于气洞式等离子喷涂形成的功能梯度氧化锆涂层、氧化锆/氧化铝复合涂层和WC复合涂层实验研究的合作。采用气洞式等离子喷涂热处理技术，实现了氧化锆复合涂层梯度功能的增强，并对氧化锆复合涂层的梯度功能进行了探讨。对氧化锆/氧化铝复合涂层进行了理论研究，并对涂层的热力学性能进行了澄清。采用传热模型计算了复合涂层的耐热性能。这些研究成果已在ISAPS '99, '01和1999-2001研究会议上发表。少

The Joint Research entitled: High-Functionally Graded Materials (HFGM) by Plasma Process, had been promoted during the fiscal year 1999-2001, in order to form high-functionally graded materials and to enhance the performance of those materials by high energy processing. Main researchers of both Japan side and USA side had been visited each other, and collaborated on the experimental and theoretical investigations. The research results of this project obtained in these three years were as follows:1. Functionally Graded Zirconia Coatings, Zirconia/Alumina Composite Coatings and WC Composite Coatings have been formed by the gas tunnel type plasma spraying at Osaka University. The microstructure and properties of these coatings were investigated, and the graded functionality of density, hardness, etc. were clarified2. The characterization of the microstructure and the functionality of obtained HFGM. One example is zirconia, alumina composite coating. The experimental results obtained by bo … More th sides will be compared and discussed. And moreover, it will be promoted to enhance the functionality of obtained HFGM by high-energy plasma etc.3. The studies on the new plasma spraying process for FGM were promoted and TiN thick coating was produced by means of the gas tunnel type plasma reactive spraying. The microstructure and physical properties such as hardness, TiN ratio etc. of these coatings were clarified. This method was established as the new process for producing HFGM.4. Japan side visited UCLA and promoted the collaboration about experimental study on Functionally Graded Zirconia Coatings, Zirconia/Alumina Composite Coatings and WC Composite Coatings formed by the gas tunnel type plasma spraying. And the enhancement of the Graded Functionality of those Zirconia Composite Coatings was achieved by the thermal process using the gas tunnel type plasma spraying and discussed about the graded functionality of those coatings.5. The theoretical study on the Zirconia/Alumina Composite Coatings was investigated and the thermo-dynamical properties of those coatings were clarified. The heat resistance of the composite coating was calculated by using the heat transfer model.6. Those research results obtained were presented at the ISAPS '99, '01, and the Research Meeting 1999-2001. Less