Liu, Chunfeng

Liu, Jiayin

Wang, Tianpeng

Zhang, Jie

English

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8th International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS)14–17 October 2016Seattle, Washington | Hosted by Purdue UniversitySESSION 4: WELDING AND COATING, SALON ECo-Chairs: Jun Qu, Oak Ridge National Laboratory; Yongping Lei, China Nuclear Power Design Company; Peng He, Harbin Institute of Technology; Yunlong Chang, Shenyang University of TechnologySATURDAY, OCTOBER 15, 2016Effect of Ni content and brazing temperature on the  self joining of ZrB2–SiCJiayin Liu, Jie Zhang, Chunfeng Liu, Tianpeng Wang, Harbin Institute of TechnologyABSTRACTPd–Co–Ni filler alloy was adopted to braze ZrB2–SiC to itself. The reliable ZrB2–SiC was obtained. The effects of Ni content and brazing temperature were investigated on the microstructure and properties of the ZrB2–SiC joints using SEM and four-point bending method. All the joints consist of diffusion zone in ZrB2–SiC ceramic, Pd–Si phase, Co–Si phase, and Ni–Co soild solution. During the brazing, Ni and Co soluted into each other; a certain control over the reaction between SiC from the ceramic and Co from the brazing alloy was obtained, which is benefical for the joint strength. Low brazing temperature leads to undesirable wettability of the brazing alloy on the ceramic. However, high brazing temperature causes the excessive reaction between SiC and Co, which caused the diffusion zone grow wider. With the increasing of brazing temperature, the bonding strength first increased and then decreased. When the brazing temperature reached 1543 K and Ni content was 26 at.%, the bending strength reached the maximum value of 120 MPa.KEYWORDS: ZrB2–SiC, Pd–Co–Ni, brazing temperature, microstructure, mechanical properties

Effect of Ni content and brazing temperature on the self joining of ZrB2–SiC

https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1048&amp;context=icpns

Effect of Ni content and brazing temperature on the self joining of ZrB2–SiC

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