会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 13. 发明专利
    • Erosion resistant coating film
    • 耐腐蚀涂层膜
    • JP2005247675A
    • 2005-09-15
    • JP2004093740
    • 2004-03-01
    • Mei Sogo Kenkyusho Kk明総合研究所有限会社
    • SHIMIZU HIROSHI
    • F02K9/14C04B41/87F02K9/34
    • PROBLEM TO BE SOLVED: To provide a method of solving a problem that a structural material in a solid fuel rocket nozzle is deeply eroded by the local erosion.
      SOLUTION: 1. A carbon-carbon fiber composite material (C/C ) or the like treated to form graphite (carbyne) to prevent the production of the thermally decomposable gas at an operation temperature is used as the structural material. 2. This erosion resistant coating film is formed by sticking or vapor-depositing vitreous carbon or CVD carbon on the surface. 3. The thickness of the provided coating film is determined corresponding to the failure probability of 1/10
      6 on reliability and for an example, the maximum thickness of a nozzle throat is B≥5.66 mm in the vitreous carbon film and B≥3.83 mm in the CVD carbon film under a combustion condition of about 100 Bar pressure, about 3,000°C temperature and about 100 sec combustion time. 4. An ultrasonic (about 20 KHz) excitation erosion test or a liquid jet stream collision erosion test at a normal temperature is carried out and the temperature characteristics of the erosion is estimated from the temperature characteristics of tensile strength data.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种解决固体燃料火箭喷嘴中的结构材料被局部侵蚀深深侵蚀的问题的方法。 作为结构材料,使用碳 - 碳纤维复合材料(C / C)等被处理以形成石墨(carbyne)以防止在可操作温度下产生可热分解气体。 该抗腐蚀涂膜通过在表面上粘附或气相沉积玻璃碳或CVD碳而形成。 所提供的涂膜的厚度根据可靠性的1/10 6 的故障概率来确定,例如,玻璃体中喷​​嘴喉部的最大厚度为B≥5.66mm 碳膜,并且在约100巴压力,约3,000℃温度和约100秒燃烧时间的燃烧条件下,CVD碳膜中B≥3.83mm。 4.在正常温度下进行超声波(约20KHz)的激发侵蚀试验或液体射流碰撞冲蚀试验,根据拉伸强度数据的温度特性估算侵蚀的温度特性。 版权所有(C)2005,JPO&NCIPI