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O que (quem) é neutral refractory - definição

CLASS OF METALS THAT ARE EXTRAORDINARILY RESISTANT TO HEAT AND WEAR

Refractory alloy; Refractory metal

Refractory

RESISTANT MATERIAL

Refractory material; Refractory brick; Refractory lining; Refractory ceramic; Refractories; Refractoriness; Castable; Refractory materials

In materials science, a refractory material or refractory is a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures. Refractories are polycrystalline, polyphase, inorganic, non-metallic, porous, and heterogeneous.

https://en.wikipedia.org/wiki/Refractory

refractory

RESISTANT MATERIAL

Refractory material; Refractory brick; Refractory lining; Refractory ceramic; Refractories; Refractoriness; Castable; Refractory materials

¦ adjective formal

1. stubborn or unmanageable.

2. resistant to a process or stimulus.

Medicine not yielding to treatment.

technical heat-resistant; hard to melt or fuse.

¦ noun (plural refractories) technical a heat-resistant substance.

Derivatives

refractoriness noun

Origin

C17: alt. of obs. refractary, from L. refractarius 'stubborn' (see also refract).

Refractoriness

RESISTANT MATERIAL

Refractory material; Refractory brick; Refractory lining; Refractory ceramic; Refractories; Refractoriness; Castable; Refractory materials

·noun The quality or condition of being refractory.

Wikipédia

Refractory metals

Refractory metals are a class of metals that are extraordinarily resistant to heat and wear. The expression is mostly used in the context of materials science, metallurgy and engineering. The definition of which elements belong to this group differs. The most common definition includes five elements: two of the fifth period (niobium and molybdenum) and three of the sixth period (tantalum, tungsten, and rhenium). They all share some properties, including a melting point above 2000 °C and high hardness at room temperature. They are chemically inert and have a relatively high density. Their high melting points make powder metallurgy the method of choice for fabricating components from these metals. Some of their applications include tools to work metals at high temperatures, wire filaments, casting molds, and chemical reaction vessels in corrosive environments. Partly due to the high melting point, refractory metals are stable against creep deformation to very high temperatures.

https://en.wikipedia.org/wiki/Refractory metals