I would like to buy 2 Si wafers, 50um thick, 25.4mm diameter. My question is how much more expensive is to have them oxidized (~100nm-300nm). I don’t care about electrical properties, these wafers will be use as “masks” for thermal evaporation of metals. I will use Bosch process to make “holes” through the wafer, so I presume the crystal Ori is not important.
How Researchers Use the Bosch Process
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What is the Bosch Process?
The Bosch Process, also known as the Haber-Bosch Process, is a chemical process for the synthesis of ammonia from nitrogen and hydrogen gases. The process was developed by German chemist Carl Bosch in collaboration with Fritz Haber in the early 20th century, and it revolutionized the production of ammonia, which is a critical component of fertilizers and many other industrial chemicals.
The Bosch Process involves reacting nitrogen gas with hydrogen gas over an iron-based catalyst at high temperatures and pressures. The reaction is exothermic, meaning that it releases heat, and it is also highly endergonic, meaning that it requires a significant input of energy. The reaction is typically carried out in a reactor vessel that is designed to handle the high pressures and temperatures required, which can range from 150-300 atmospheres of pressure and 400-550 degrees Celsius in temperature.
The Bosch Process has played a critical role in modern agriculture and industry, as it allows for the large-scale production of ammonia, which is a key ingredient in fertilizers and a variety of other industrial chemicals. It is estimated that roughly 80% of the nitrogen in human bodies today is derived from the Haber-Bosch process, highlighting the significant impact that this process has had on the world.