文章信息/Info

Title:

Research Advances on Mechanical Property Improvement of Engineering Ceramic Joints

作者:

何鵬; 馮青華; 林鐵松; Dusan P Sekulic

哈爾濱工業大學先進焊接與連接國家重點實驗室，肯塔基大學工程學院機械工程系

Author(s):

Peng He;  Qinghua Feng;  Tiesong Lin;  Dusan P. Sekulic

Research Advances on Mechanical Property Improvement of Engineering Ceramic Joints

關鍵詞:

工程陶瓷; 連接結構; 力學性能; 彈性應變能; 界面脆性反應層; 研究進展

Keywords:

engineering ceramics;  joining structure;  mechanical properties;  elastic strain energy;  brittle reaction layer at the interface;  research development

DOI:

10.7502/j.issn.1674-3962.2017.02.05

文獻標志碼:

A

摘要:

當前科學技術的迅速發展對工程材料的性能提出了越來越嚴苛的要求。工程陶瓷具有高強高硬、優異的高溫性能以及耐腐蝕等眾多優勢，已逐漸代替傳統的工程金屬材料，被應用于一些極端環境下的各種工程結構中，而陶瓷材料的連接成為該材料成功使用的關鍵技術之一。但是現有陶瓷接頭性能相對于母材較低，導致工程陶瓷連接結構性能不高主要有兩大原因，即陶瓷基體彈性應變能的積累和界面脆性反應層生成。分別綜述了近年來不斷涌現的緩解陶瓷基體彈性應變能和控制界面脆性反應層厚度的各種工藝方法，具體分析了每項工藝方法的理論機理、適用條件、使用范例以及不足。并對進一步提高工程陶瓷連接結構力學性能的理論研究和工藝方法進行了展望。

Abstract:

With the rapid development of science and technology, more and more stringent requirements for the properties of engineering materials are put forward. Engineering ceramics possess multiple advantages such as high strength and hardness, excellent resistance to high temperature and corrosion. With the gradual application of the engineering ceramics in extreme environment as alternatives for traditional metallic materials, the joining techniques of these ceramics appear to be one of the critical issues before used successfully. However, currently the properties of the joints of the ceramics are much lower than that of the matrix themselves, which are mainly due to two reasons. One is the accumulation of elastic strain energy in the ceramic matrix, and the other is the formation of the brittle reaction layer at the interface. In this review, various techniques emerging in recent years are introduced for the relief of the elastic strain energy of the ceramic base materials and the control of the thickness of the brittle reaction layer at the interface, whose basic theories, condition of use, examples of application, and disadvantages are analyzed in detail. At last, an outlook is provided for the theoretical research and technical procedures for the further development of mechanical properties of the joint structures of engineering ceramics.