公开(公告)号：US4419191A

公开(公告)日：1983-12-06

申请号：US410184

申请日：1982-08-20

申请人： Kenneth E. Weber ,  Steven D. Hoffer

发明人： Kenneth E. Weber ,  Steven D. Hoffer

IPC分类号： C23C22/64 ,  C23C22/77 ,  G01N27/30 ,  G01N27/416 ,  G01N27/46

CPC分类号： C23C22/64 ,  C23C22/77 ,  G01N27/4166

摘要： A modified alkaline peroxide pre-bond process for the surface treatment of titanium is useful as a practical production process. In this modified process, an exceptionally wide range of allowable peroxide concentration, namely, from 0.001 molar to 0.2 molar (and preferably 0.001 molar to 0.01 molar) may be tolerated and a novel real-time peroxide monitoring and control technique is employed. The process is further improved by means of the use of stabilizers such as precipitated magnesium silicate which greatly increases bath life-time and reduces the overall operating cost of the process. Solution operating conditions have been defined which permit titanium adherends to be processed satisfactorily over a wide range of hydrogen peroxide concentration. In particular, the acceptance temperature range is 125.degree. F.-165.degree. F. (51.7.degree. C.-73.8.degree. C.); the treatment period is 15 to 25 minutes and the hydroxide concentration is 0.3 to 0.9 molar. The preferred values are approximately 145.degree. F. (62.7.degree. C.); 20 minutes, and 0.5 molar, respectively. An electromechanical method has been established utilizing a magnesium electrode (114) which provides a stable potential characteristic that is dependent only on the concentration of the peroxide. The resultant capability to reliably monitor the peroxide concentration in real time in turn permits an automated feed system to be effectively utilized for sustaining the peroxide concentration within the desired limits.

摘要翻译： 用于表面处理钛的改性碱过氧化物预粘合方法可用作实际的生产方法。 在该改进方法中，可以容许异常宽范围的允许的过氧化物浓度，即0.001摩尔至0.2摩尔（优选0.001摩尔至0.01摩尔），并且采用新颖的实时过氧化物监测和控制技术。 通过使用稳定剂如沉淀的硅酸镁进一步改进该方法，这大大增加了洗涤池的使用寿命并降低了该方法的总体运行成本。 已经定义了溶液操作条件，其允许钛被粘物在广泛的过氧化氢浓度范围内令人满意地加工。 特别地，接受温度范围为125°F-165°F（51.7℃-73.8℃）; 处理时间为15〜25分钟，氢氧化物浓度为0.3〜0.9摩尔。 优选值约为145°F（62.7℃）; 20分钟，0.5摩尔。 已经使用镁电极（114）建立了机电方法，该电极提供仅依赖于过氧化物浓度的稳定的电位特性。 所得到的实时可靠地监测过氧化物浓度的能力又允许自动进料系统被有效地用于将过氧化物浓度维持在所需的限度内。