A novel potential ceramic material for melting Ti6Al4V alloy: A solid solution of BaZrO3 and CaZrO3 |
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| Affiliation: | 1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;2. Taizhou Wangxin Refractory Co., Ltd., Taizhou 225300, China;1. Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China;2. School of Mechanical Engineering, Guilin University of Aerospace Technology, Guilin 541004, China;3. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin 541004, China;1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;2. School of Material Science and Energy Engineering, Foshan University, Foshan 528000, China;3. Nuclear Fuel Research and Development Center, China Nuclear Power Technology Research Institute, Shenzhen 518026, China;1. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan, Shandong, 250061, PR China;2. School of Materials Science and Engineering, Shandong University, Jinan, Shandong, 250061, PR China;1. Key Lab of Preparation and Application of Inorganic Ultrafine Powder, Liaoning Provincial Department of Education, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, China;2. State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;1. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China;2. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Vacuum induction melting technology is a promising low-cost method for producing high-quality titanium alloy. The key challenge lies in the development of ceramic crucibles with excellent chemical stability for titanium alloy corrosion. In this work, (Ba1?x,Cax)ZrO3 ceramic was designed and synthesised via pressureless sintering of a mixture of BaZrO3 and CaZrO3 powders. X-ray diffraction and scanning electron microscopy analyses showed that a new phase, Ba0.8Ca0.2ZrO3, was formed after heat treatment at 1700 °C. Vacuum induction melting experiments of the Ti6Al4V alloy were carried out using a Ba0.8Ca0.2ZrO3 crucible. Compared with the original BaZrO3 crucible and CaZrO3 crucible, the erosion layer of the Ba0.8Ca0.2ZrO3 crucible was significantly reduced by approximately 85～92.5%. The interface between the crucible and the alloy was clearly visible, and there was no obvious element diffusion between the alloy and the material. This shows that Ba0.8Ca0.2ZrO3 is highly promising as a crucible material for melting Ti6Al4V alloys. |
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| Keywords: | Solid solution Ti6Al4V Reaction interface |
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