原位合成Al_3Ti颗粒增强铝基复合涂层（英文）
Saved in:
| Published in: | 中国有色金属学报：英文版 Vol. 22; no. 6; pp. 1387 - 1392 |
|---|---|
| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2012
|
| Subjects: | |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Bibliography: | NIU Li-bin, ZHANG Ju-mei, YANG Xiao-lan College of Materials Science and Engineering, Xi＇an University of Science and Technology, Xi＇an 710055, China 43-1239/TG Using titanium wires （99.5%, 200 μm in diameter） as a reactive source, an Al-based composite coating reinforced by titanium tri-aluminide （A13Ti） particles was fabricated by infiltration plus in-situ methods. According to the differential thermal analysis （DTA） curve, the reactive temperature between Ti wires and A1 matrix can be determined at 890 ℃. The obtained composite coatings were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and microhardness and wear test. The experimental results show that when holding period is 20 min at 890℃, the titanium wires react completely to in-situ synthesize Al3Ti particles, which presents blocky and strip-like states. The microhardness of in-situ synthesized Al3Ti particles is about 4.5 times that of the Al-matrix. Under the condition of dry sliding at 10 N load, compared with the unreinforced Al matrix, the composite coating fabricated with 20 min offers unique wear resistance behavior, and its wear mechanism is that the adhesive wear and abrasive wear coexist. intermetallics; in-situ reaction; composite coating; wear resistance |
|---|---|
| ISSN: | 1003-6326 |