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使用银铜溅射涂层钛钎料将氧化铝与钛合金连接起来。

Joining Alumina to Titanium Alloys Using Ag-Cu Sputter-Coated Ti Brazing Filler.

作者信息

Emadinia Omid, Guedes Aníbal, Tavares Carlos José, Simões Sónia

机构信息

Department of Metallurgical and Materials Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.

LAETA/INEGI-Institute of Science and Innovation in Mechanical and Industrial Engineering, Rua. Dr. Roberto Frias, 4200-465 Porto, Portugal.

出版信息

Materials (Basel). 2020 Oct 28;13(21):4802. doi: 10.3390/ma13214802.

DOI:10.3390/ma13214802
PMID:33126445
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7663279/
Abstract

The joining of alumina (AlO) to γ-TiAl and Ti6Al4V alloys, using Ag-Cu sputter-coated Ti brazing filler foil, was investigated. Brazing experiments were performed at 980 °C for 30 min in vacuum. The microstructure and chemical composition of the brazed interfaces were analyzed by scanning electron microscopy and by energy dispersive X-ray spectroscopy, respectively. A microstructural characterization of joints revealed that sound multilayered interfaces were produced using this novel brazing filler. Both interfaces are composed mainly of α-Ti, along with Ti(Ag,Cu) and TiAg intermetallics. In the case of the brazing of γ-TiAl alloys, α-TiAl and γ-TiAl intermetallics are also detected at the interface. Bonding to AlO is promoted by the formation of a quite hard Ti-rich layer, which may reach a hardness up to 1872 HV 0.01 and is possibly composed of a mixture of α-Ti and Ti oxides. Hardness distribution maps indicate that no segregation of either soft or brittle phases occurs at the central regions of the interfaces or near the base Ti alloys. In addition, a smooth hardness transition was established between the interface of AlO to either γ-TiAl or Ti6Al4V alloys.

摘要

研究了使用银铜溅射涂层钛钎料箔将氧化铝（AlO）与γ-TiAl和Ti6Al4V合金连接的情况。钎焊实验在980°C真空环境下进行30分钟。分别通过扫描电子显微镜和能量色散X射线光谱仪分析了钎焊界面的微观结构和化学成分。接头的微观结构表征表明，使用这种新型钎料可产生良好的多层界面。两个界面主要由α-Ti以及Ti(Ag,Cu)和TiAg金属间化合物组成。在γ-TiAl合金的钎焊情况下，界面处还检测到α-TiAl和γ-TiAl金属间化合物。通过形成相当硬的富钛层促进了与AlO的结合，该层硬度可达1872 HV 0.01，可能由α-Ti和Ti氧化物的混合物组成。硬度分布图表明，在界面的中心区域或靠近基体钛合金处未出现软相或脆相的偏析。此外，在AlO与γ-TiAl或Ti6Al4V合金的界面之间建立了平滑的硬度过渡。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/884f4af0e1af/materials-13-04802-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/93fc72ac3747/materials-13-04802-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/a26a617df3c1/materials-13-04802-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/43aa45a8397b/materials-13-04802-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/70d4984a0475/materials-13-04802-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/8f2ef32a90ca/materials-13-04802-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/504b41e993ab/materials-13-04802-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/e4ad1898c39a/materials-13-04802-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/884f4af0e1af/materials-13-04802-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/93fc72ac3747/materials-13-04802-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/a26a617df3c1/materials-13-04802-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/43aa45a8397b/materials-13-04802-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/70d4984a0475/materials-13-04802-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/8f2ef32a90ca/materials-13-04802-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/504b41e993ab/materials-13-04802-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/e4ad1898c39a/materials-13-04802-g007a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4fe5/7663279/884f4af0e1af/materials-13-04802-g008.jpg

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本文引用的文献

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