Putting graphite coatings on metal

A. Graphite coating can be done using using cathodic arc, sputtering etc. The coating would have both graphitic and diamond phases whose ratio can be controlled. The films are actually called DLC. RF & microwave can be used.

A. Not many people in the world can tell you what it will cost in your country.
You need to define what you really want in more detail, but I am going to guess. I think that you are looking for a thin graphite coating that is somewhat like paint.
Do a web search for "dry Film Lubrication". Traditionally, this is moly disulfide, but several companies sell a graphite one.
Normally, it involves a phosphate coating, with zinc phosphate being better than iron phosphate. Costs more but is superior in many ways. Then the dry film material is sprayed on with a common ⇦ this on eBay or Amazon [affil links] and then is baked.
Try to find a local distributor for better tech services and availability.

A. Graphite lubricant is easily sprayable. Are you looking for a lubricant or some kind of permanent impermeable coating, Todd? Do you want it to be absorbed into any holidays left by the sintering? (although you can't vacuum impregnate something by simple spraying). Please describe the required parameters of the coating. Thanks.

A. Do a web search for graphite dry film lubrication. This can be abraded off, but it sticks extremely well to phosphated steel. Use moly di sulfide for aluminum. On sintered metal, I would try it to see if phosphating was necessary. It is so rough and porous that it well might not require it.

A. If you are looking for lubricity, try tungsten disulfide. It adheres better than graphite, has a lower coefficient of friction and is applied dry. There are several processors who will provide the coating service.

A. Graphite coatings can withstand very high temperatures and provide corrosion resistance because it's very hydrophobic, the coating can be applied by spray or brush on methods, you may want to research on Dry Graphite lubricants.

 Hi Krishna. Since these are tools, I think you probably want the DLC/graphite coatings which Mr. Prabhakara explained? Please tell us whether you mean you are seeking an outside service to do such coatings on your tools, or whether you mean you are seeking equipment to do your own coating in house, or whether you mean you are considering opening a coatings service for the tool industry. Please study the answers offered by Mssrs. Prabhakara, Watts, and Sevilla and ask for clarification of anything you do not understand.

People asking for help outnumber those offering it by 20 to 1, so etiquette & efficiency require that we who are asking questions invest more effort in our questions than we ask of the responders who help us. Thanks and good luck!

Regards,

Yes, it is. But please give us the who, what, when, where, & why -- because experience proves that the readers who can provide you with useful guidance are reluctant to do it if they must start with multiple paragraphs of ifs-ands-&-buts that probably aren't applicable to your situation anyway. Thanks!

Regards,