Peer review is a critical element of scholarly publication and one of the major cornerstones of the scientific process. It ensures that published research is sound and properly verified and improves the quality of the research. In order to apply the highest standards in ethical publishing, Tribology and Materials advises our reviewers to base their work on the recommendations of the Committee on Publication Ethics (COPE) and its guidelines for peer reviewers.

Invitation to review: You will receive an email invitation from the journal that includes the manuscript and the review form. In addition to your availability, please consider whether the topic of this work is within your field of expertise. Please let us know if you are accepting or declining our invitation to review as soon as possible, to minimise delay for the authors. If you are unable to review, we would be grateful if you would suggest an alternative referee.

Before agreeing to review: We usually ask our reviewers to submit their comments within three weeks of agreeing to review a paper, although extensions can be granted. If you do not have time to review the article, please let the editorial office know. Suggestions for alternative reviewers are always welcome.

Reviewing a manuscript: As a reviewer, it is important that you remain objective in your critical appraisal. You should not allow your personal prejudice about research topics or researchers to influence your judgment. Your comments should be professional and courteous and should help the author to improve their paper and present their research as clearly and concisely as possible. If you have reasons to believe that the material is not original or has been plagiarised, please alert the editorial office.

When reviewing a manuscript, you should take into consideration the following: Originality and quality (Is the paper of sufficient interest for publication in the journal? Does it contribute significantly to the current state of the research field? Is the topic handled substantively and accurately in appropriate detail and scope?); Structure (Does the manuscript has an abstract, introduction, method, results, conclusion and are they adequately divided and clearly presented?); Engagement with previous research and results (e.g. Does the author engage with current/relevant research in the field); If a paper is difficult to understand due to grammatical errors please mention this in your report.

Submitting a report: Please submit your report by replying directly to the email from which you received the invitation and attaching the completed review form. Please do not change the subject line of the email when responding this way. If you need any assistance, please contact the editorial office.

Becoming a reviewer: If interested in reviewing, please send a letter of interest and curriculum vitae along with 'key words', phrases or topics that you would be interested in reviewing. You can also email the editorial office if you would like to recommend a colleague specialised in the field as an additional reviewer.

Thank you to our reviewers: Reviewers for the journal Tribology and Materials are selected by the handling editor based on their expertise. Reviewers volunteer their time and effort to provide scientific critiques of the submitted papers that assist the handling editor to make informed decisions about manuscript acceptance. Therefore, the editorial team of Tribology and Materials journal would like to thank the following colleagues who reviewed on a voluntary basis all manuscripts submitted over the past year. Their help highly improved the quality of the journal.