碳化钨的区别是什么d Boron Carbide

Thekey difference between tungsten carbide and boron carbideis that boron carbide is harder and stiffer than tungsten carbide.

Both tungsten carbide and boron carbide are industrially important materials that are very hard and stiff thansteel. Therefore, they are useful in heavy machinery and in applications where we apply a strong impact on materials.

1.Overview and Key Difference
2.What is Tungsten Carbide
3.What is Boron Carbide
4.钨碳化物vs Boron Carbide in Tabular Form
5.Summary – Tungsten Carbide vs Boron Carbide

What is Tungsten Carbide?

碳化钨是具有化学配方WC的化合物。具体来说，我们可以称其为碳化物化合物。它包含钨和碳原子的相等部分。该物质看起来像是一种细灰色粉末，可以通过称为sintering. Tungsten carbide is useful in industrial machinery, cutting tools, abrasives, armour-piercing shells, and jewellery.

More importantly, this material is about twice stiff as steel. It has a high value for Young’s modulus, which can range from 530 to 700 GPa. Besides, the density of this material is twice the density of steel. That is nearly midway between the density of lead and gold. Moreover, we can compare its hardness with corundum due to its high hardness. Tungsten carbide can undergo polishing and finishing only with abrasives of superior hardness, e.g. cubic boron nitride and钻石powder.

We can manufacture tungsten carbide from the reaction between tungsten metal and carbon at a very high temperature. Alternatively, we can do this at a lower temperature fluid bed process which involves the reaction of tungsten metal or tungsten oxide with a carbon monoxide and carbon dioxide mixture and hydrogen gas.

There are two forms of tungsten carbide as tungsten carbide and tungsten semi-carbide, depending on the amount of carbide present per tungsten equivalent. Both these compounds can be found in coatings, and the proportions of tungsten and carbide depend on the coating method. In addition, this material decomposes at very high temperatures, forming tungsten and carbon through the thermal spray process.

What is Boron Carbide?

硼碳酸酯是具有化学式B4C的化合物。这是一种极其硬的硼 - 碳陶瓷材料。这也是一个covalent compound. There are many important applications of this substance, including use in tank armour, bulletproof vests, engine sabotage powders, and many other industrial applications. It appears as a dark grey or black powder that is odourless. It is insoluble in water. The crystal structure is rhombohedral.

Boron carbide is a robust material with extremely high hardness. It also has a high cross-section for the absorption of neutrons. This material has high stability to ionizing radiation and most chemical substances. Moreover, it shows semiconductor properties as well.

我们可以通过在电弧炉处存在碳或镁的情况下减少三氧化硼的硼碳化物。在这里，如果我们使用碳，则该反应发生在碳化物碳化物化合物的熔点上方的温度下进行。如果我们使用镁，则该反应发生在石墨坩埚中，我们可以通过用酸处理副产品。

碳化钨的区别是什么d Boron Carbide?

Tungsten carbide is a chemical compound having the chemical formula WC and it contains equal parts of tungsten and carbon atoms. Boron carbide is an extremely hard boron-carbon ceramic material having the chemical formula B4C. The key difference between tungsten carbide and boron carbide is that boron carbide is harder and stiffer than tungsten carbide.

下面的信息图显示了碳化通钨和碳化钾碳化物以表格形式与并排比较之间的差异。

Summary – Tungsten Carbide vs Boron Carbide

Both tungsten carbide and boron carbide are industrially important materials that are very hard and stiff than steel. The key difference between tungsten carbide and boron carbide is that boron carbide is harder and stiffer than tungsten carbide.

Reference:

1. “钨碳化物.” An Overview | ScienceDirect Topics.

Image Courtesy:

1. “Tungsten carbide” By Splarka at English Wikipedia – Transferred from en.wikipedia to Commons. (Public Domain) via Commons Wikimedia
2. “Boron carbide” By Preslav – Own work (Public Domain) via Commons Wikimedia