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2. Tungsten carbide - Wikipedia

   en.wikipedia.org/wiki/Tungsten_carbide

   Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...

3. Tungsten - Wikipedia

   en.wikipedia.org/wiki/Tungsten

   The jewelry industry makes rings of sintered tungsten carbide, tungsten carbide/metal composites, and also metallic tungsten. [78] WC/metal composite rings use nickel as the metal matrix in place of cobalt because it takes a higher luster when polished. Sometimes manufacturers or retailers refer to tungsten carbide as a metal, but it is a ...

4. Engagement ring - Wikipedia

   en.wikipedia.org/wiki/Engagement_ring

   The rings are often in the form of a plain band of a precious metal. Sometimes, the engagement ring eventually serves as the wedding ring for the man. In Brazil, for example, the groom and bride-to-be usually wear a plain wedding band on the right hand during the course of their engagement. [53] After the wedding, the band is moved to the left ...

5. Cemented carbide - Wikipedia

   en.wikipedia.org/wiki/Cemented_carbide

   The first cemented carbide developed was tungsten carbide (introduced in 1927) which uses tungsten carbide particles held together by a cobalt metal binder. Since then, other cemented carbides have been developed, such as titanium carbide, which is better suited for cutting steel, and tantalum carbide, which is tougher than tungsten carbide. [1]

6. Carbide - Wikipedia

   en.wikipedia.org/wiki/Carbide

   Some of them, including titanium carbide and tungsten carbide, are important industrially and are used to coat metals in cutting tools. [3] The long-held view is that the carbon atoms fit into octahedral interstices in a close-packed metal lattice when the metal atom radius is greater than approximately 135 pm: [2]

7. Conan O'Brien's Parents, Who Were Married for 66 Years ... - AOL

   www.aol.com/lifestyle/conan-obrien-parents-were...

   Dr. Thomas O’Brien and his wife Ruth Reardon O’Brien, the parents of late night comedian Conan O’Brien, have died three days apart. Thomas was 95 and Ruth was 92. Thomas died on Monday, Dec ...