Patents by Inventor Jiuchun Yan

Jiuchun Yan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Ultrasonic brazing of aluminum alloy and aluminum matrix composite
    Patent number: 7624906
    Abstract: A method of ultrasonic brazing metal matrix composite, which forms a reinforced composite bond without filling welding wire with reinforcement or adding alloy element to generate ceramic phase, includes the steps of setting a filler metal; introducing ultrasonic vibration to braze in air; dissolving the base materials, and introducing ultrasonic wave again. The method performs the aluminum brazing at low temperature. The periodic time of brazing is shorter and the cost is lower than the conventional brazing methods. The strength, service temperature and dimensional stability of the joint are close to the base article.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: December 1, 2009
    Assignee: Harbin Institute of Technology
    Inventors: Jiuchun Yan, Weiwei Zhao, Huibin Xu, Dacheng Li, Zhiwu Xu, Shiqin Yang, Yang Zhang, Zhipeng Ma
  • Ultrasonic brazing of aluminum alloy and aluminum matrix composite
    Publication number: 20090020589
    Abstract: A method of ultrasonic brazing metal matrix composite, which forms a reinforced composite bond without filling welding wire with reinforcement or adding alloy element to generate ceramic phase, includes the steps of setting a filler metal; introducing ultrasonic vibration to braze in air; dissolving the base materials, and introducing ultrasonic wave again. The method performs the aluminum brazing at low temperature. The periodic time of brazing is shorter and the cost is lower than the conventional brazing methods. The strength, service temperature and dimensional stability of the joint are close to the base article.
    Type: Application
    Filed: November 21, 2007
    Publication date: January 22, 2009
    Inventors: Jiuchun Yan, Weiwei Zhao, Huibin Xu, Dacheng Li, Zhiwu Xu, Shiqin Yang, Yang Zhang, Zhipeng Ma