Silver-based brazing filler metal with active element of Ti was believed to promote wetting in brazing of ceramic surfaces. The results have shown that a reaction layer is present between the sapphire and the brazed layer. There is also a variation in the phase formation between the sapphire/...
Abstract Sapphire has been widely used in military and civil fields because of its excellent physical and chemical properties. However, the existing technology cannot achieve the preparation of large sapphire. Therefore, effective bonding of sapphire is the method to expand its application. In this pa...
In this technique, due to a poor wettability of a liquid metal on the ceramic [4], an alloy containing a small amount of an active element such as Ti, Nb, V, Zr, or Hf may sufficiently promote a reaction between the alloy and the ceramic substrate [5], [6]. Generally, brazing of...
A study was conducted to understand the wetting phenomena observed in brazing of a Ti-containing active filler metal on sapphire substrates. The goal of th... JJ Stephens,FM Hosking,TJ Headley,... - 《Metallurgical & Materials Transactions A》 被引量: 46发表: 2003年 ...
In the activating element brazing, an active element, usually Ti, reacts with Al2O3 and induces the formation of a Ti–O compound layer at the interface [18], [27]. This reaction usually requires a temperature higher than 700 °C and a vacuum environment. Therefore, a simple and fast ...
SapphireBrazingSn-Ag-TiInterfacial reactionWettingLow temperatureIn this paper, a preliminary study in the wetting behavior and interface reaction between active Sn-Ag-4Ti solder alloy and C-plane sapphire was given. An in-situ observation of Sn-Ag-4Ti alloy on C-plane sapphire revealed a ...
Thus, a new technical route for joining ceramics with aluminum alloys is proposed, which is hopefully an alternative of conventional active brazing. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.Cui, WeiLi, ShuqiYan, JiuchunHe, JingshanLiu, YanCERAMICS INTERNATIONAL...
A study was conducted to understand the wetting phenomena observed in brazing of a Ti-containing active filler metal on sapphire substrates. The goal of the study was to understand the interfacial reactions that permit wetting of commercial Ag-Cu-Ti active filler metal to pure alumina, despite ...
FORMATION OF METALLIC LAYER ON SAPPHIRE SURFACEPURPOSE: To inexpensively and simply form a metallic layer with high adhesive strength by forming a nitride layer on the surface of a sapphire and brazing a metallic solder containing an active metal thereon to form the metallic layer.ISHIDA YOICHI...
Thus, a new technical route for joining ceramics with aluminum alloys is proposed, which is hopefully an alternative of conventional active brazing.doi:10.1016/j.ceramint.2015.02.149Cui, WeiState Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, People...