The invention relates to lubricant additive compositions and lubricant compositions each comprising thiophosphates and thiophosphate derivatives, methods for making and using the same, including methods of lubricating machines and machine parts and methods of extending the useful life of elastomeric seal components of such machines.

Anti-friction composite material having: (A) polyimide substrate and (B) a coating layer containing a binder resin and a solid lubricant.

The invention provides an SRT material (lubricant) applicable to machine elements such as bearings, seals or guides (guiding mechanisms) that constitute a slide part of a machine. A lubricant and an SRT material are disclosed.

Household lubricant compositions containing medium chain triglycerides are non-toxic and biodegradable. The lubricant compositions are made using vegetable oil components and stabilized using alcohol, an antioxidant, and a metal chelator. The lubricant compositions offer safe and environmentally friendly alternatives to petroleum-based lubricants, yet have similar lubricity and are more stable than naturally sourced vegetable oils. The compositions also can be used to clean and coat surfaces, including food preparation surfaces, and to prevent corrosion. Still further uses include sterilization and sanitation of surfaces and as a skin conditioner and lubricant.

A solid lubricating coating film capable of imparting favorable lubricity and corrosion resistance to a connection for oil country tubular goods. Two or more solid lubricants are dispersed in a binder resin. Graphite is contained in an amount of 50% or more and 90% or less of a total weight of the solid lubricants, and the graphite has a scaly shape and an average particle diameter of 10.0 ?m or less. A solid lubricant made of one or more materials selected from BN, mica, talc, MCA, MoS.sub.2, PTFE, PFA, and FEP is further contained as other solid lubricants of the two or more types of solid lubricants. The binder resin contains a PEEK resin having an average particle diameter of 20 ?m or less as a main component, and the PEEK resin is contained in an amount of 70% or more of a total weight of the binder resin.

The invention concerns a threaded portion of a tubular element for a threaded tubular connection having an axis of revolution, the portion comprising a threading extending over its outer or inner peripheral surface, and a first sealing surface on the peripheral surface, the first sealing surface being capable of producing metal-metal interference with a corresponding second sealing surface belonging to a complementary threaded portion. The threading and the first sealing surface are coated with a metallic anti-galling layer wherein zinc (Zn) is the major element by weight, the metallic anti-galling layer being at least partially coated with a lubricant layer comprising a resin and a dry solid lubricant powder dispersed in the resin.

A threaded joint (1) for pipes disclosed herein includes a pin (5) and a box (8). The pin (5) and the box (8) each include a contact surface including a threaded portion (4, 7) and a metal contact portion. The threaded joint (1) for pipes includes a solid lubricant coating (21) on at least one of the contact surfaces of the pin (5) and the box (8), the solid lubricant coating (21) including a binder, a lubricant additive, an anti-rust additive, and a plasticizer.

The present disclosure relates to lubricant compositions for use on engine components. The lubricant compositions include, by volume: 30 to 50% graphite in alcohol solution; 0.1 to 5% surfactant; and 40 to 70% water. The present disclosure also relates to processes for preparing lubricant compositions and methods of using such compositions.

This invention provides a threaded connection for pipe or tube that has a non-sticky surface and that suppresses the occurrence of rust and exhibits excellent galling resistance and airtightness even in an extremely low temperature environment without using compound grease, a method of producing the same, and a composition for forming a solid lubricating coating on the threaded connection. A solid lubricating coating (24) formed from a composition containing a binder, a fluorine addition agent, a solid lubricant and a rust proof addition agent is coated as a topmost surface treatment coating on a contact surface of at least one of a pin and a box. Even when exposed to an extremely low temperature environment, the solid lubricating coating (24) can maintain adhesiveness and exhibit a lubricating function, can suppress the occurrence of galling of a threaded connection, and can also secure airtightness after fastening.

An oil-well metal pipe according to the present disclosure includes: a pipe main body that includes a pin which includes a pin contact surface including an external thread part and which is formed at a first end portion, and a box which includes a box contact surface including an internal thread part and which is formed at a second end portion; and a ZnNi alloy plating layer which is formed on at least one of the pin contact surface and the box contact surface. The X-ray diffraction intensities of the ZnNi alloy plating layer satisfy Formula (1).

[00001]$\begin{array}{cc}{I}_{18}/\left(I_{18}+I_{36}+I_{54}\right)0.6& \left(1\right)\end{array}$

Here, in Formula (1), in units of cps, an X-ray diffraction intensity of {411} and {330} is substituted for I.sub.18, an X-ray diffraction intensity of {442} and {600} is substituted for I.sub.36, and an X-ray diffraction intensity of {552} is substituted for I.sub.54.