Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Walther Peter Nunan Current Assignee (The listed assignees may be inaccurate. ( en Inventor Yuri Erokhin Paul Sullivan Steven R. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US12/212,386 Other versions US7939424B2 Google Patents US20090081848A1 - Wafer bonding activated by ion implantation
#Jewelery ion bonding technique generator#
You need isolation of your generator from the backwards traveling wave else you will burn the generator if the tuner is not perfect.US20090081848A1 - Wafer bonding activated by ion implantation You need the automatic tuner to tune the incoming microwave to the losses of your sample. Microvawe brazing at temperatures up to 1200☌ also. Microwave heated cearmic firing is a matter of fact in industrial processes. The currents that are generated (also by Ohms law thus temperature dependent) will contribute to heating. The magnetic field will directly induce voltages by its fast changing magnetic flux. These currenst will heat the metal.Īs the frequencies are pretty high (some GHz) the currents are limited to a very shallow surface (micrometer) where there may be an oxide that can be heated also by dielectric losses (nonideal capacitors). If you use an automatic 3stub-tuner and an isolator this is possible, provided you have enough energy to overcome the heat losses and you have accurate coupling to put the energy into your specimen.Īs metals are more or less good conductors, the electric field at the surface will generate big currents (given by temperature dependent resistance).
Oh, and everything inside that microwave chamber was also metal, so I might like to add that tuning your resonant cavity plays a huge role in what gets hot and what doesnt, and arc mitigation. Plasma temp was well in excess of 3000 C at 4.9 kW. Later on in life I worked at a research lab where we used various carbon containing substances to strike plasmas in a microwave device for the purposes of growing synthetic diamond. After about 3 seconds the microwaves would strike a purpleish ball of plasma, which I can tell you was probably pretty hot. In college I used to demonstrate (I was a physic student) for my drunken frat buddies by placing a lit wooden match in the microwave and setting it on high. Carbon does some pretty interesting things in the kitchen microwave. My guess is the carbon (probably graphite) boat is doing the heating for what you describe. That grey area on the supplied plate/sleeve contains metal, although Im not sure if thats really ment to reflect heat or the actual microwaves back into the food.
Anyone who's bought a microwave pizza or a hot pocket can attest that metal is put in the microwave all the time.