The phrase "a key material for" is correct and usable in written English.
It can be used when discussing an essential component or substance needed for a particular purpose or process.
Example: "Silicon is a key material for the production of semiconductors in electronic devices."
Alternatives: "an essential component for" or "a crucial element for".
A key material for this technology is the high temperature proton exchange membrane.
Citric acid dissolved in the spray solution of the cobalt precursor is a key material for the formation of the hollow thin-walled precursor powders.
Last December, the renewable energy analysts New Energy Finance predicted silicon costs – a key material for much solar panel technology – would fall by 31.5% in 2009 compared with 2008 levels.
The plated permalloy film has played an important role since 1979 as a key material for the head core of thin film head, ever since IBM shipped the first hard disk drive (HDD) using a thin film head in 1979.
Graphene forms the basic structure of other carbon-based materials: when it is stacked it generates the graphite, when it is wrapped it creates carbon buckyballs, while when it is rolled-up it forms the carbon nanotube, which is a key material for nanoelectronic devices that working from few hundred megahertz up to X-rays.
Metal-polymer composites were studied as a key material for transistor construction in electronics industry[6].
The basal plane cleavage energy (CE) of graphite is a key material parameter for understanding many of the unusual properties of graphite, graphene and carbon nanotubes.
Repeatability and reproducibility of the evaluation method is ensured to facilitate the representative ranking of materials based on droplet impact erosion resistance being a key material property for durable steam turbine blade designs.
Gold nanoparticle (Au NP), being the most stable mono-metallic nanoparticle, promises to be a key material and building block for newer technologies in the twenty-first century.
Hydrogen is a required key material for petroleum refineries that convert crude oil into products with higher economic value and is often produced by the steam methane reforming (SMR) process, which synthesizes hydrogen and carbon oxides from methane and superheated steam in the presence of a nickel-based catalyst network in a steam methane reformer.
Demand for copper — a key material in construction and manufacturing — has long been a proxy for the overall health of the world economy.
