吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (4): 521-526.

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Low oxygen pressure self-fused Al-Cr coatings formed on surface of Ti alloy and their oxidation resistance

ZHAO Yuguang1, ZHOU Wei1, PENG Xin2, LIANG Yunhong1, QIN Qingdong1   

  1. 1. College of Materials Science and Engineering, Jilin University, Changchun 130022, China;
    2. Shenyang Liming Aero-Group Corporation, Shenyang 110043, China
  • Received:2004-06-04 Online:2004-10-01

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Abstract: The low oxygen pressure self-fused Al-Cr coatings were made on the surface of the samples from the Ti-6Al-4V alloy. The effects of processing parameters such as fusing time, etc, on the formation of the coating and the effects of the Al-Cr coating on the cyclic oxidation behavior of the alloy in the air at the temperature of 873 K were investigated by observing and analyzing the surface morphology and the cross-section structures of the coating. The results show that the thickness of the inter-diffusion zone can be controlled by the fusing time, and processing for an appropriate fusing time may greatly improve the adherence of the coating to the substrate and enhance the cyclic oxidation resistance of the coating. The oxidation resistance of the coated sample is almost 300 times higher than that of the uncoated sample.

Key words: metallic material, Ti-6Al-4V alloy, low oxygen pressure self-fused Al-Cr coating, high-temperature oxidation

CLC Number: 

  • TB331
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