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2. Gelcoat - Wikipedia

   en.wikipedia.org/wiki/Gelcoat

   Gelcoat or gel coat is a material used to provide a high-quality finish on the visible surface of a fibre-reinforced composite. The most common gelcoats are thermosetting polymers based on epoxy or unsaturated polyester resin chemistry. Gelcoats are modified resins which are applied to moulds in the liquid state.

3. Fuel saving device - Wikipedia

   en.wikipedia.org/wiki/Fuel_saving_device

   This formula expresses the theoretical efficiency of a petrol engine: [25] η = 1 − 1 r v γ − 1 {\displaystyle \eta =1-{1 \over r_{v}^{\gamma -1}}} where η is efficiency, r v is the compression ratio , and γ is the ratio of the specific heats of the cylinder gases.

4. Xylan (coating) - Wikipedia

   en.wikipedia.org/wiki/Xylan_(coating)

   Xylan is generally used to reduce friction, improve wear resistance, and for non-stick applications. Additionally, it can be used to protect a metal from corrosion.The most commonly known application is in non-stick cookware but Xylan coatings have also been used extensively in the automotive industry and for corrosion protection in the oil and gas industry.

5. Salt spray test - Wikipedia

   en.wikipedia.org/wiki/Salt_spray_test

   The salt spray test (or salt fog test) is a standardized and popular corrosion test method, used to check corrosion resistance of materials and surface coatings.Usually, the materials to be tested are metallic (although stone, ceramics, and polymers may also be tested) and finished with a surface coating which is intended to provide a degree of corrosion protection to the underlying metal.

6. Silica gel - Wikipedia

   en.wikipedia.org/wiki/Silica_gel

   Colloidal silica gel with light opalescence. Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum.

7. Spin coating - Wikipedia

   en.wikipedia.org/wiki/Spin_coating

   Spin coating is widely used in microfabrication of functional oxide layers on glass or single crystal substrates using sol-gel precursors, where it can be used to create uniform thin films with nanoscale thicknesses. [6] It is used intensively in photolithography, to deposit layers of photoresist about 1 micrometre thick. Photoresist is ...