Tenneco has been granted a patent for an improved atomized powder metal material that contains a higher amount of free graphite after heat treatment and/or sintering. The material is typically a ferrous alloy and includes carbon and silicon, along with other alloying elements such as copper, cobalt, and tin. The patent claim specifies the composition and characteristics of the material. GlobalData’s report on Tenneco gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Tenneco, piston head combustion chambers was a key innovation area identified from patents. Tenneco's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
Improved atomized powder metal material with increased free graphite
A recently granted patent (Publication Number: US11685982B2) describes a material that consists of a powder metal. The powder metal is atomized and contains iron as the main component, making up at least 50% of the total weight. Additionally, the powder metal includes carbon in the range of 2.2% to 4.8% by weight, copper up to 4% by weight, and silicon in the range of 2.5% to 6.0% by weight. The powder metal also contains cobalt in at least 1% by weight and/or tin in at least 0.5% by weight. The material may optionally include other elements such as nickel, aluminum, sulfur, phosphorous, boron, nitrogen, chromium, manganese, molybdenum, vanadium, niobium, tungsten, titanium, tantalum, zirconium, zinc, strontium, calcium, barium, magnesium, lithium, sodium, and potassium.
The powder metal can be heat treated and/or sintered, resulting in a material that contains free graphite. In one specific embodiment, the powder metal includes carbon in the range of 2.2% to 4.3% by weight and silicon in the range of 2.5% to 4.5% by weight.
Another embodiment of the material includes a powder metal alloy that is atomized. The powder metal alloy consists of iron as the main component, making up at least 50% of the total weight. The alloy also includes carbon in the range of 2.2% to 4.8% by weight, silicon in the range of 0.1% to 2.5% by weight, and copper up to 4% by weight. Additionally, the alloy contains cobalt in the range of 1% to 46% by weight and/or tin in the range of 0.5% to 15% by weight. Similar to the previous embodiment, the alloy may include other elements such as nickel, aluminum, sulfur, phosphorous, boron, nitrogen, chromium, manganese, molybdenum, vanadium, niobium, tungsten, titanium, tantalum, and zirconium. The powder metal alloy can be heat treated and/or sintered, resulting in the presence of free graphite.
Overall, this patent describes materials consisting of powder metals or powder metal alloys with specific compositions and the presence of free graphite after heat treatment and/or sintering. These materials may have various applications in industries such as manufacturing, automotive, and aerospace.
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